Chess Puzzle #iyif9 — Advanced, White to move, middlegame

Position

White: king g1; queen f5; knight e4; pawns a2/c3/g2/h3. Black: king h7; queen c2; bishop b6; knight f2; pawns a7/b7/c7/g7/h6. Black is ahead by 4 points of material. White to move.

Solution (3 moves)

1. Opponent setup: Kg8 — king h7→g8. Now White to move.
2. Best move: Nf6+ — knight e4→f6, gives check. Opponent replies Kf7 (king g8→f7).
3. Best move: Qxc2 — queen f5→c2, captures queen. Opponent replies Ng4+ (knight f2→g4, gives check).
4. Best move: Kh1 — king g1→h1.

Tactical themes

advantage, defensive move, discovered attack, endgame, long. The key move is Nf6+.

Position data

FEN: 8/ppp3pk/1b5p/5Q2/4N3/2P4P/P1q2nP1/6K1 b - - 3 30

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